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Finding the Third Proportional to 21,272.88 and 29,810.38

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Solution

The third proportional to 21,272.88 and 29,810.38 is: 41,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.88 : 29,810.38 = 29,810.38 : x
  2. Step 2: Convert to fraction form
    21,272.88/29,810.38 = 29,810.38/x
  3. Step 3: Cross multiply
    21,272.88x = 29,810.38 × 29,810.38
  4. Step 4: Simplify right side
    21,272.88x = 888,658,457.64
  5. Step 5: Solve for x
    x = 888,658,457.64/21,272.88
  6. Step 6: Final answer
    x = 41,774.25

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.